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oa Nuclear Magnetic Resonance (NMR) Logging -Lessons Learned at the USGS Cape Cod Toxic Substances Hydrology Research Site, Massachusetts
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Near Surface Geoscience 2014 - 20th European Meeting of Environmental and Engineering Geophysics, Sep 2014, Volume 2014, p.1 - 2
Abstract
Summary
Over the last 30 years, advancements have been made in developing borehole geophysical tools and methods for determining aquifer hydraulic properties that control solute transport. More recent advances in technology allow for nuclear magnetic resonance (NMR) logging of small-diameter boreholes typical of environmental studies. Advantages of the NMR logging method are that (1) NMR does not use active nuclear sources to determine water content, and (2) NMR provides depth-dependent estimates of pore-size distribution that allow for the distinction between bound- and mobile-water fractions, which is not possible with active-source logs.
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